Diffusion Choir is a kinetic sculpture commissioned by Biomed Realty for its building at 650 East Kendall Street in Cambridge, Massachusetts. Sosolimited partnered with Plebian Design and Hypersonic to design, program, and fabricate this unique artwork.

The sculpture celebrates the organic beauty of collaboration by visualizing the movements of an invisible flock of birds. Four hundred folding elements form a hanging volume in the sunlit atrium. Each element can independently open and close, controlled by custom software running a flocking algorithm.

The movements of the sculpture are perpetually evolving, driven by the flocking simulation. Over the course of each hour, smaller groups of birds coalesce into a single entity, soaring through the air in fluid collaboration. At each quarter hour, the birds gather and perform special choreographed gestures across the sculpture.

The sculpture reflects the collaborative and innovative spirit of the work happening in the building. The graceful breath-like movements of the piece create an open, contemplative space for all the inhabitants of the building to enjoy.